Index Catalog // ScholarsArchive@OSU

Population genetic structure and ecology of Rhizobium leguminosarum

Creator:: Strain, Steven R.
Resource Type:: Dissertation
Full Text:: Population genetic structure and ecology of Rhizobium

Ecology of a soil population of Rhizobium leguminosarum bv. trifolii

Creator:: Leung, Kam-tin
Resource Type:: Dissertation
Full Text:: Ecology of a soil population of Rhizobium leguminosarum

Soil community dynamics in sagebrush and cheatgrass-invaded ecosystems of the northern Great Basin

Creator:: DeCrappeo, Nicole M.
Abstract:: Sagebrush steppe ecosystems in the Great Basin have become increasingly threatened by the proliferation of cheatgrass (Bromus tectorum L.), an invasive annual grass. Diverse sagebrush and perennial bunchgrass landscapes can be converted to homogenous cheatgrass grasslands mainly through the effects of fire. Although the consequences of this conversion are well...
Resource Type:: Dissertation
Full Text:: helped along the way. Members of the IFAFS research project, especially Paul Doescher, Bob Blank, and

Episodic dynamics of microbial communities associated with the birth and death of ectomycorrhizal mats in old-growth Douglas-fir stands

Creator:: Blanchard, Joseph H.
Abstract:: Ectomycorrhizal (ECM) fungi of the genera Piloderma and Ramaria form dense hyphal mats in the organic and upper mineral soil layers, respectively, in coniferous forest floors of the Pacific Northwest. Previous studies have determined that fungal mats change the chemical, physical, and biological properties of the soil within. Little information...
Resource Type:: Masters Thesis
Full Text:: guidance during my research project. Secondly, I would like to thank Rockie Yarwood, Stephanie Yarwood

Response of soil microbial communities to physical and chemical disturbances: implications for soil quality and land use sustainability

Creator:: Chaer, Guilherme M.
Abstract:: The objectives of this thesis were to evaluate the responses of soil microbial communities to physical and chemical disturbances, and associate these responses with soil functional stability and changes in soil quality. The first study consisted of application of heat shocks (HS) to soils with contrasting land use history to...
Resource Type:: Dissertation
Full Text:: ? Applied Soil Ecology 13, 105-108. Berg, G., Roskot, N., Steidle, A., Eberl, L., Zock, A., Smalla, K

Characteristics of bradyrhizobium sp. recovered from Oregon soils

Creator:: Cheng, Hsin-hua
Abstract:: Although the biology of Bradyrhizobium has been studied for almost one hundred years, virtually nothing is known about the ecology and genetic variation in natural soil populations of this genus. The majority of information has been obtained from studies of one species, Bradyrhizobium japonicum, and the diversity within soil populations...
Resource Type:: Masters Thesis
Full Text:: Bradyrhizobium has been studied for almost one hundred years, virtually nothing is known about the ecology and

Community profiles of ammonia oxidizers across high-elevation forest-to-meadow transects

Creator:: Mintie, Ann
Abstract:: In recent years considerable interest has been shown in the diversity of ammonia-oxidizing bacteria in soil communities. The majority of the research has been carried out in Northern Europe where soils have received high atmospheric inputs of nitrogen over the past two centuries. In contrast, although much work has been...
Resource Type:: Masters Thesis
Full Text:: research has been carried out in Northern Europe where soils have received high atmospheric inputs of

An epifluorescence method for assessing viability of bacteria in soil aggregates

Creator:: Shiozawa, Tracy L.
Resource Type:: Masters Thesis
Full Text:: to my research. And, to Khrys, Rockie, Sandra and Aisha, my lab mates, I thank them for their help

Symbiotic and saprophytic characteristics of a soil population of Rhizobium leguminosarum bv. trifolii

Creator:: Yap, Kathryn H. M.
Abstract:: Although much has been learned about the comparative nodulating behavior of simple mixtures of rhizobial strains under non-soil situations, it is unclear how these findings relate to the factors influencing nodulation success by the complex mixtures of strains found within soil-borne rhizobial populations. Information on the structure and physiological behavior...
Resource Type:: Masters Thesis
Full Text:: ecology of soil rhizobial populations play in relation to nodulation success by either inoculant strains

Symbiotic characteristics of Rhizobium leguminosarum bv. trifolii recovered from nodules of field-grown Trifolium subterraneum L.

Creator:: Wanjagi, Francis Ndung'u
Abstract:: In a series of greenhouse experiments, isolates representing serotypically distinct subpopulations of Rhizobium leguminosarum bv. trifolii recovered from root nodules of field-grown subclover Trifolium subterraneum cv. "Nangeela"), were evaluated for their symbiotic effectiveness potential, their effect on regrowth potential of subclover, and for their competitive abilities to form nodules. Isolates...
Resource Type:: Masters Thesis
Full Text:: superiority. Prior to this thesis research, competitiveness between members of major and minor nodule

ScholarsArchive@OSU

Population genetic structure and ecology of Rhizobium leguminosarum

Ecology of a soil population of Rhizobium leguminosarum bv. trifolii

Soil community dynamics in sagebrush and cheatgrass-invaded ecosystems of the northern Great Basin

Episodic dynamics of microbial communities associated with the birth and death of ectomycorrhizal mats in old-growth Douglas-fir stands

Response of soil microbial communities to physical and chemical disturbances: implications for soil quality and land use sustainability

Characteristics of bradyrhizobium sp. recovered from Oregon soils

Community profiles of ammonia oxidizers across high-elevation forest-to-meadow transects

An epifluorescence method for assessing viability of bacteria in soil aggregates

Symbiotic and saprophytic characteristics of a soil population of Rhizobium leguminosarum bv. trifolii

Symbiotic characteristics of Rhizobium leguminosarum bv. trifolii recovered from nodules of field-grown Trifolium subterraneum L.

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